Click "Start," then right-click on "My Computer" and select "Properties." Click the "General" tab on the "System Properties" page. Under "System" take note of the version of Windows 98 that you have installed. It will either be labeled as "4.10.1998," which is the original version, or "4.10.2222," which is the second version. This matters, because it will determine the version driver that you will download. Read more: How to Use a USB Flash Drive on Windows 98 | eHow http://www.ehow.com/how_6864571_use-flash-drive-windows-98.html#ixzz2WcW3sEiC